diff options
author | dec05eba <dec05eba@protonmail.com> | 2023-12-13 20:17:13 +0100 |
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committer | dec05eba <dec05eba@protonmail.com> | 2023-12-13 20:36:41 +0100 |
commit | bc5a4cf5fcc70e30028ff8fa91dca075896b2764 (patch) | |
tree | 24b7fe9cc18a8deb3b30ee6f1265152ba8ad628f /depends/libxcb-image/xcb/xcb_pixel.h | |
parent | 4d639d934ec56b53e8f4776a7a0794f05b5451b6 (diff) |
Include all libxcb utils (wm, util, image, errors, cursor)
Diffstat (limited to 'depends/libxcb-image/xcb/xcb_pixel.h')
-rw-r--r-- | depends/libxcb-image/xcb/xcb_pixel.h | 171 |
1 files changed, 171 insertions, 0 deletions
diff --git a/depends/libxcb-image/xcb/xcb_pixel.h b/depends/libxcb-image/xcb/xcb_pixel.h new file mode 100644 index 0000000..fcb22b4 --- /dev/null +++ b/depends/libxcb-image/xcb/xcb_pixel.h @@ -0,0 +1,171 @@ +#ifndef __XCB_PIXEL_H__ +#define __XCB_PIXEL_H__ + +/* Copyright (C) 2007 Bart Massey + * + * Permission is hereby granted, free of charge, to any person obtaining a + * copy of this software and associated documentation files (the "Software"), + * to deal in the Software without restriction, including without limitation + * the rights to use, copy, modify, merge, publish, distribute, sublicense, + * and/or sell copies of the Software, and to permit persons to whom the + * Software is furnished to do so, subject to the following conditions: + * + * The above copyright notice and this permission notice shall be included in + * all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR + * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, + * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE + * AUTHORS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN + * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN + * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. + * + * Except as contained in this notice, the names of the authors or their + * institutions shall not be used in advertising or otherwise to promote the + * sale, use or other dealings in this Software without prior written + * authorization from the authors. + */ + +#include <inttypes.h> +#include <X11/Xfuncproto.h> +#ifndef BUILD +#include <xcb/xcb_bitops.h> +#include <xcb/xcb_image.h> +#endif + +/** + * XCB Image fast pixel ops. + * + * Fast inline versions of xcb_image_get_pixel() and + * xcb_image_put_pixel() for various common cases. + * The naming convention is xcb_image_put_pixel_FUB() + * where F is the format and is either XY for bitmaps + * or Z for pixmaps, U is the bitmap unit size or pixmap + * bits-per-pixel, and B is the endianness (if needed) + * and is either M for most-significant-first or L for + * least-significant-first. Note that no checking + * is done on the arguments to these routines---caller beware. + * Also note that the pixel type is chosen to be appropriate + * to the unit; bitmaps use int and pixmaps use the appropriate + * size of unsigned. + * @ingroup xcb__image_t + */ + +_X_INLINE static void +xcb_image_put_pixel_XY32M (xcb_image_t *image, + uint32_t x, + uint32_t y, + int pixel) +{ + uint32_t unit = (x >> 3) & ~xcb_mask(2); + uint32_t byte = xcb_mask(2) - ((x >> 3) & xcb_mask(2)); + uint32_t bit = xcb_mask(3) - (x & xcb_mask(3)); + uint8_t m = 1 << bit; + uint8_t p = pixel << bit; + uint8_t * bp = image->data + (y * image->stride) + (unit | byte); + *bp = (*bp & ~m) | p; +} + +_X_INLINE static void +xcb_image_put_pixel_XY32L (xcb_image_t *image, + uint32_t x, + uint32_t y, + int pixel) +{ + uint32_t bit = x & xcb_mask(3); + uint8_t m = 1 << bit; + uint8_t p = pixel << bit; + uint8_t * bp = image->data + (y * image->stride) + (x >> 3); + *bp = (*bp & ~m) | p; +} + +_X_INLINE static int +xcb_image_get_pixel_XY32M (xcb_image_t *image, + uint32_t x, + uint32_t y) +{ + uint32_t unit = (x >> 3) & ~xcb_mask(2); + uint32_t byte = xcb_mask(2) - ((x >> 3) & xcb_mask(2)); + uint32_t bit = xcb_mask(3) - (x & xcb_mask(3)); + uint8_t * bp = image->data + (y * image->stride) + (unit | byte); + return (*bp >> bit) & 1; +} + +_X_INLINE static int +xcb_image_get_pixel_XY32L (xcb_image_t *image, + uint32_t x, + uint32_t y) +{ + uint32_t bit = x & xcb_mask(3); + uint8_t * bp = image->data + (y * image->stride) + (x >> 3); + return (*bp >> bit) & 1; +} + +_X_INLINE static void +xcb_image_put_pixel_Z8 (xcb_image_t *image, + uint32_t x, + uint32_t y, + uint8_t pixel) +{ + image->data[x + y * image->stride] = pixel; +} + +_X_INLINE static uint8_t +xcb_image_get_pixel_Z8 (xcb_image_t *image, + uint32_t x, + uint32_t y) +{ + return image->data[x + y * image->stride]; +} + +_X_INLINE static void +xcb_image_put_pixel_Z32M (xcb_image_t *image, + uint32_t x, + uint32_t y, + uint32_t pixel) +{ + uint8_t * row = image->data + (y * image->stride); + row[x << 2] = pixel >> 24; + row[(x << 2) + 1] = pixel >> 16; + row[(x << 2) + 2] = pixel >> 8; + row[(x << 2) + 3] = pixel; +} + +_X_INLINE static void +xcb_image_put_pixel_Z32L (xcb_image_t *image, + uint32_t x, + uint32_t y, + uint32_t pixel) +{ + uint8_t * row = image->data + (y * image->stride); + row[x << 2] = pixel; + row[(x << 2) + 1] = pixel >> 8; + row[(x << 2) + 2] = pixel >> 16; + row[(x << 2) + 3] = pixel >> 24; +} + +_X_INLINE static uint32_t +xcb_image_get_pixel_Z32M (xcb_image_t *image, + uint32_t x, + uint32_t y) +{ + uint8_t * row = image->data + (y * image->stride); + uint32_t pixel = row[x << 2] << 24; + pixel |= row[(x << 2) + 1] << 16; + pixel |= row[(x << 2) + 2] << 8; + return pixel | row[(x << 2) + 3]; +} + +_X_INLINE static uint32_t +xcb_image_get_pixel_Z32L (xcb_image_t *image, + uint32_t x, + uint32_t y) +{ + uint8_t * row = image->data + (y * image->stride); + uint32_t pixel = row[x << 2]; + pixel |= row[(x << 2) + 1] << 8; + pixel |= row[(x << 2) + 2] << 16; + return pixel | row[(x << 2) + 3] << 24; +} + +#endif /* __XCB_PIXEL_H__ */ |